Upgraded TMIC 3.5" thich which makes is 2 full inches thicker than stock. Bar and plate design dramatically decreases restriction and pressure drop. Polished endtanks look nice when you pop the hood.
It took a little bit of wrestling, but that's expected when you're installing something much bigger on its stock location. I am very displeased with its build quality, 3 months after install, a weld by the hot side endtank failed. It is currently uninstalled and awayting repair.